Treated Graded Aggregate is wet gravel, which may or may not be blended, and to which a binder—usually hydraulic—is added.

If a bituminous binder is added, we refer to the product as bound graded aggregate (emulsion, cement, ...). The addition of this binder increases the mechanical strength of the mixture.

Treated Graded Aggregate is used in road structures (in the base course and/or foundations, depending on the traffic), in roadbeds and pipe-laying operations (e.g. the backfilling of trenches).

In-plant treatment compared to in-situ treatment improves traceability and homogeneity of the final mix. A high-performance mixer is required